Wu Zhu’s effects include dispersing cold and relieving pain (relieving pain by removing cold from the body), lowering rebelliousness and stopping vomiting (stopping vomiting by blocking the upward flow of gastric qi), and assisting yang in stopping diarrhea, and it has the function of treating syncopal headache (headache caused by evils invading the syncopal meridian), and abdominal pain with cold hernia (acute abdominal pain caused by the deficiency of coldness of the internal organs and the sensation of wind and cold from the external world). The drug is contraindicated for people with yin deficiency and fire exuberance (deficiency of yin essence in the body and hyperactivity of deficiency fire). Cornus officinalis is derived from the dried, nearly mature fruit of Cornus officinalis, Cornuus officinalis, Cornuus shihu, or Cornus officinalis, family Rutaceae. The drug is bitter and hot in nature, with a small poison, and belongs to the liver, spleen, stomach and kidney meridians. It has the effects of dispersing cold and relieving pain, descending rebelliousness and vomiting, and assisting Yang to stop diarrhea. It can be used to treat syncopal headache, cold hernia and abdominal pain, cold-damp feet (numbness, soreness and swelling of legs and feet caused by cold and dampness), menstrual abdominal pain, distension and pain in the epigastrium (abdomen), vomiting and acid swallowing (swallowing the acid in the stomach that rushes upward to the oropharynx), and diarrhea in the fifth hour (diarrhea before dawn), and other conditions. The medicine has a small poison, so it should not be taken for a long time, and should be avoided for people with yin deficiency and fire exuberance. If necessary, it is recommended to go to a regular hospital for consultation and treatment under the guidance of a professional physician to identify the symptoms.